Showing the changes to java/pkg/javax/management/loading/DefaultLoaderRepository.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package javax.management.loading; | |
| 27 | + | |
| 28 | +import static com.sun.jmx.defaults.JmxProperties.MBEANSERVER_LOGGER; | |
| 29 | +import java.util.Iterator; | |
| 30 | +import java.util.List; | |
| 31 | +import java.util.logging.Level; | |
| 32 | +import javax.management.MBeanServer; | |
| 33 | +import javax.management.MBeanServerFactory; | |
| 34 | + | |
| 35 | +/** | |
| 36 | + * <p>Keeps the list of Class Loaders registered in the MBean Server. | |
| 37 | + * It provides the necessary methods to load classes using the registered | |
| 38 | + * Class Loaders.</p> | |
| 39 | + * | |
| 40 | + * <p>This deprecated class is maintained for compatibility. In | |
| 41 | + * previous versions of JMX, there was one | |
| 42 | + * <code>DefaultLoaderRepository</code> shared by all MBean servers. | |
| 43 | + * As of JMX 1.2, that functionality is approximated by using {@link | |
| 44 | + * MBeanServerFactory#findMBeanServer} to find all known MBean | |
| 45 | + * servers, and consulting the {@link ClassLoaderRepository} of each | |
| 46 | + * one. It is strongly recommended that code referencing | |
| 47 | + * <code>DefaultLoaderRepository</code> be rewritten.</p> | |
| 48 | + * | |
| 49 | + * @deprecated Use | |
| 50 | + * {@link javax.management.MBeanServer#getClassLoaderRepository()}} | |
| 51 | + * instead. | |
| 52 | + * | |
| 53 | + * @since 1.5 | |
| 54 | + */ | |
| 55 | +@Deprecated | |
| 56 | +public class DefaultLoaderRepository { | |
| 57 | + | |
| 58 | + /** | |
| 59 | + * Go through the list of class loaders and try to load the requested | |
| 60 | + * class. | |
| 61 | + * The method will stop as soon as the class is found. If the class | |
| 62 | + * is not found the method will throw a <CODE>ClassNotFoundException</CODE> | |
| 63 | + * exception. | |
| 64 | + * | |
| 65 | + * @param className The name of the class to be loaded. | |
| 66 | + * | |
| 67 | + * @return the loaded class. | |
| 68 | + * | |
| 69 | + * @exception ClassNotFoundException The specified class could not be | |
| 70 | + * found. | |
| 71 | + */ | |
| 72 | + public static Class<?> loadClass(String className) | |
| 73 | + throws ClassNotFoundException { | |
| 74 | + MBEANSERVER_LOGGER.logp(Level.FINEST, | |
| 75 | + DefaultLoaderRepository.class.getName(), | |
| 76 | + "loadClass", className); | |
| 77 | + return load(null, className); | |
| 78 | + } | |
| 79 | + | |
| 80 | + /** | |
| 81 | + * Go through the list of class loaders but exclude the given | |
| 82 | + * class loader, then try to load | |
| 83 | + * the requested class. | |
| 84 | + * The method will stop as soon as the class is found. If the class | |
| 85 | + * is not found the method will throw a <CODE>ClassNotFoundException</CODE> | |
| 86 | + * exception. | |
| 87 | + * | |
| 88 | + * @param className The name of the class to be loaded. | |
| 89 | + * @param loader The class loader to be excluded. | |
| 90 | + * | |
| 91 | + * @return the loaded class. | |
| 92 | + * | |
| 93 | + * @exception ClassNotFoundException The specified class could not be | |
| 94 | + * found. | |
| 95 | + */ | |
| 96 | + public static Class<?> loadClassWithout(ClassLoader loader, | |
| 97 | + String className) | |
| 98 | + throws ClassNotFoundException { | |
| 99 | + MBEANSERVER_LOGGER.logp(Level.FINEST, | |
| 100 | + DefaultLoaderRepository.class.getName(), | |
| 101 | + "loadClassWithout", className); | |
| 102 | + return load(loader, className); | |
| 103 | + } | |
| 104 | + | |
| 105 | + private static Class<?> load(ClassLoader without, String className) | |
| 106 | + throws ClassNotFoundException { | |
| 107 | + final List<MBeanServer> mbsList = MBeanServerFactory.findMBeanServer(null); | |
| 108 | + | |
| 109 | + for (MBeanServer mbs : mbsList) { | |
| 110 | + ClassLoaderRepository clr = mbs.getClassLoaderRepository(); | |
| 111 | + try { | |
| 112 | + return clr.loadClassWithout(without, className); | |
| 113 | + } catch (ClassNotFoundException e) { | |
| 114 | + // OK : Try with next one... | |
| 115 | + } | |
| 116 | + } | |
| 117 | + throw new ClassNotFoundException(className); | |
| 118 | + } | |
| 119 | + | |
| 120 | + } | |